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452 lines
11 KiB
452 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* adv7175 - adv7175a video encoder driver version 0.0.3 |
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* |
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* Copyright (C) 1998 Dave Perks <[email protected]> |
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* Copyright (C) 1999 Wolfgang Scherr <[email protected]> |
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* Copyright (C) 2000 Serguei Miridonov <[email protected]> |
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* - some corrections for Pinnacle Systems Inc. DC10plus card. |
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* |
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* Changes by Ronald Bultje <[email protected]> |
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* - moved over to linux>=2.4.x i2c protocol (9/9/2002) |
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*/ |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/ioctl.h> |
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#include <linux/uaccess.h> |
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#include <linux/i2c.h> |
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#include <linux/videodev2.h> |
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#include <media/v4l2-device.h> |
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MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver"); |
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MODULE_AUTHOR("Dave Perks"); |
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MODULE_LICENSE("GPL"); |
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#define I2C_ADV7175 0xd4 |
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#define I2C_ADV7176 0x54 |
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static int debug; |
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module_param(debug, int, 0); |
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MODULE_PARM_DESC(debug, "Debug level (0-1)"); |
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/* ----------------------------------------------------------------------- */ |
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struct adv7175 { |
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struct v4l2_subdev sd; |
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v4l2_std_id norm; |
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int input; |
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}; |
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static inline struct adv7175 *to_adv7175(struct v4l2_subdev *sd) |
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{ |
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return container_of(sd, struct adv7175, sd); |
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} |
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static char *inputs[] = { "pass_through", "play_back", "color_bar" }; |
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static u32 adv7175_codes[] = { |
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MEDIA_BUS_FMT_UYVY8_2X8, |
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MEDIA_BUS_FMT_UYVY8_1X16, |
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}; |
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/* ----------------------------------------------------------------------- */ |
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static inline int adv7175_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(sd); |
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return i2c_smbus_write_byte_data(client, reg, value); |
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} |
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static inline int adv7175_read(struct v4l2_subdev *sd, u8 reg) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(sd); |
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return i2c_smbus_read_byte_data(client, reg); |
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} |
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static int adv7175_write_block(struct v4l2_subdev *sd, |
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const u8 *data, unsigned int len) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(sd); |
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int ret = -1; |
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u8 reg; |
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/* the adv7175 has an autoincrement function, use it if |
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* the adapter understands raw I2C */ |
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if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
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/* do raw I2C, not smbus compatible */ |
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u8 block_data[32]; |
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int block_len; |
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while (len >= 2) { |
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block_len = 0; |
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block_data[block_len++] = reg = data[0]; |
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do { |
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block_data[block_len++] = data[1]; |
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reg++; |
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len -= 2; |
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data += 2; |
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} while (len >= 2 && data[0] == reg && block_len < 32); |
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ret = i2c_master_send(client, block_data, block_len); |
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if (ret < 0) |
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break; |
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} |
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} else { |
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/* do some slow I2C emulation kind of thing */ |
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while (len >= 2) { |
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reg = *data++; |
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ret = adv7175_write(sd, reg, *data++); |
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if (ret < 0) |
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break; |
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len -= 2; |
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} |
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} |
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return ret; |
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} |
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static void set_subcarrier_freq(struct v4l2_subdev *sd, int pass_through) |
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{ |
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/* for some reason pass_through NTSC needs |
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* a different sub-carrier freq to remain stable. */ |
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if (pass_through) |
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adv7175_write(sd, 0x02, 0x00); |
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else |
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adv7175_write(sd, 0x02, 0x55); |
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adv7175_write(sd, 0x03, 0x55); |
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adv7175_write(sd, 0x04, 0x55); |
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adv7175_write(sd, 0x05, 0x25); |
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} |
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/* ----------------------------------------------------------------------- */ |
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/* Output filter: S-Video Composite */ |
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#define MR050 0x11 /* 0x09 */ |
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#define MR060 0x14 /* 0x0c */ |
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/* ----------------------------------------------------------------------- */ |
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#define TR0MODE 0x46 |
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#define TR0RST 0x80 |
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#define TR1CAPT 0x80 |
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#define TR1PLAY 0x00 |
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static const unsigned char init_common[] = { |
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0x00, MR050, /* MR0, PAL enabled */ |
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0x01, 0x00, /* MR1 */ |
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0x02, 0x0c, /* subc. freq. */ |
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0x03, 0x8c, /* subc. freq. */ |
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0x04, 0x79, /* subc. freq. */ |
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0x05, 0x26, /* subc. freq. */ |
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0x06, 0x40, /* subc. phase */ |
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0x07, TR0MODE, /* TR0, 16bit */ |
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0x08, 0x21, /* */ |
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0x09, 0x00, /* */ |
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0x0a, 0x00, /* */ |
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0x0b, 0x00, /* */ |
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0x0c, TR1CAPT, /* TR1 */ |
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0x0d, 0x4f, /* MR2 */ |
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0x0e, 0x00, /* */ |
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0x0f, 0x00, /* */ |
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0x10, 0x00, /* */ |
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0x11, 0x00, /* */ |
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}; |
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static const unsigned char init_pal[] = { |
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0x00, MR050, /* MR0, PAL enabled */ |
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0x01, 0x00, /* MR1 */ |
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0x02, 0x0c, /* subc. freq. */ |
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0x03, 0x8c, /* subc. freq. */ |
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0x04, 0x79, /* subc. freq. */ |
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0x05, 0x26, /* subc. freq. */ |
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0x06, 0x40, /* subc. phase */ |
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}; |
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static const unsigned char init_ntsc[] = { |
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0x00, MR060, /* MR0, NTSC enabled */ |
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0x01, 0x00, /* MR1 */ |
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0x02, 0x55, /* subc. freq. */ |
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0x03, 0x55, /* subc. freq. */ |
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0x04, 0x55, /* subc. freq. */ |
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0x05, 0x25, /* subc. freq. */ |
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0x06, 0x1a, /* subc. phase */ |
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}; |
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static int adv7175_init(struct v4l2_subdev *sd, u32 val) |
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{ |
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/* This is just for testing!!! */ |
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adv7175_write_block(sd, init_common, sizeof(init_common)); |
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adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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adv7175_write(sd, 0x07, TR0MODE); |
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return 0; |
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} |
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static int adv7175_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
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{ |
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struct adv7175 *encoder = to_adv7175(sd); |
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if (std & V4L2_STD_NTSC) { |
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adv7175_write_block(sd, init_ntsc, sizeof(init_ntsc)); |
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if (encoder->input == 0) |
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adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ |
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adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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adv7175_write(sd, 0x07, TR0MODE); |
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} else if (std & V4L2_STD_PAL) { |
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adv7175_write_block(sd, init_pal, sizeof(init_pal)); |
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if (encoder->input == 0) |
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adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ |
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adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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adv7175_write(sd, 0x07, TR0MODE); |
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} else if (std & V4L2_STD_SECAM) { |
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/* This is an attempt to convert |
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* SECAM->PAL (typically it does not work |
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* due to genlock: when decoder is in SECAM |
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* and encoder in in PAL the subcarrier can |
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* not be synchronized with horizontal |
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* quency) */ |
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adv7175_write_block(sd, init_pal, sizeof(init_pal)); |
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if (encoder->input == 0) |
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adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */ |
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adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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adv7175_write(sd, 0x07, TR0MODE); |
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} else { |
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v4l2_dbg(1, debug, sd, "illegal norm: %llx\n", |
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(unsigned long long)std); |
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return -EINVAL; |
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} |
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v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std); |
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encoder->norm = std; |
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return 0; |
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} |
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static int adv7175_s_routing(struct v4l2_subdev *sd, |
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u32 input, u32 output, u32 config) |
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{ |
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struct adv7175 *encoder = to_adv7175(sd); |
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/* RJ: input = 0: input is from decoder |
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input = 1: input is from ZR36060 |
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input = 2: color bar */ |
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switch (input) { |
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case 0: |
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adv7175_write(sd, 0x01, 0x00); |
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if (encoder->norm & V4L2_STD_NTSC) |
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set_subcarrier_freq(sd, 1); |
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adv7175_write(sd, 0x0c, TR1CAPT); /* TR1 */ |
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if (encoder->norm & V4L2_STD_SECAM) |
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adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */ |
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else |
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adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ |
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adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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adv7175_write(sd, 0x07, TR0MODE); |
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/*udelay(10);*/ |
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break; |
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case 1: |
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adv7175_write(sd, 0x01, 0x00); |
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if (encoder->norm & V4L2_STD_NTSC) |
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set_subcarrier_freq(sd, 0); |
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adv7175_write(sd, 0x0c, TR1PLAY); /* TR1 */ |
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adv7175_write(sd, 0x0d, 0x49); |
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adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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adv7175_write(sd, 0x07, TR0MODE); |
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/* udelay(10); */ |
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break; |
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case 2: |
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adv7175_write(sd, 0x01, 0x80); |
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if (encoder->norm & V4L2_STD_NTSC) |
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set_subcarrier_freq(sd, 0); |
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adv7175_write(sd, 0x0d, 0x49); |
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adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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adv7175_write(sd, 0x07, TR0MODE); |
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/* udelay(10); */ |
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break; |
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default: |
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v4l2_dbg(1, debug, sd, "illegal input: %d\n", input); |
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return -EINVAL; |
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} |
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v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]); |
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encoder->input = input; |
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return 0; |
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} |
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static int adv7175_enum_mbus_code(struct v4l2_subdev *sd, |
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struct v4l2_subdev_pad_config *cfg, |
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struct v4l2_subdev_mbus_code_enum *code) |
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{ |
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if (code->pad || code->index >= ARRAY_SIZE(adv7175_codes)) |
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return -EINVAL; |
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code->code = adv7175_codes[code->index]; |
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return 0; |
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} |
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static int adv7175_get_fmt(struct v4l2_subdev *sd, |
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struct v4l2_subdev_pad_config *cfg, |
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struct v4l2_subdev_format *format) |
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{ |
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struct v4l2_mbus_framefmt *mf = &format->format; |
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u8 val = adv7175_read(sd, 0x7); |
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if (format->pad) |
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return -EINVAL; |
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if ((val & 0x40) == (1 << 6)) |
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mf->code = MEDIA_BUS_FMT_UYVY8_1X16; |
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else |
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mf->code = MEDIA_BUS_FMT_UYVY8_2X8; |
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mf->colorspace = V4L2_COLORSPACE_SMPTE170M; |
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mf->width = 0; |
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mf->height = 0; |
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mf->field = V4L2_FIELD_ANY; |
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return 0; |
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} |
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static int adv7175_set_fmt(struct v4l2_subdev *sd, |
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struct v4l2_subdev_pad_config *cfg, |
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struct v4l2_subdev_format *format) |
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{ |
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struct v4l2_mbus_framefmt *mf = &format->format; |
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u8 val = adv7175_read(sd, 0x7); |
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int ret = 0; |
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if (format->pad) |
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return -EINVAL; |
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switch (mf->code) { |
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case MEDIA_BUS_FMT_UYVY8_2X8: |
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val &= ~0x40; |
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break; |
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case MEDIA_BUS_FMT_UYVY8_1X16: |
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val |= 0x40; |
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break; |
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default: |
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v4l2_dbg(1, debug, sd, |
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"illegal v4l2_mbus_framefmt code: %d\n", mf->code); |
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return -EINVAL; |
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} |
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if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
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ret = adv7175_write(sd, 0x7, val); |
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return ret; |
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} |
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static int adv7175_s_power(struct v4l2_subdev *sd, int on) |
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{ |
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if (on) |
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adv7175_write(sd, 0x01, 0x00); |
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else |
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adv7175_write(sd, 0x01, 0x78); |
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return 0; |
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} |
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/* ----------------------------------------------------------------------- */ |
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static const struct v4l2_subdev_core_ops adv7175_core_ops = { |
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.init = adv7175_init, |
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.s_power = adv7175_s_power, |
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}; |
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static const struct v4l2_subdev_video_ops adv7175_video_ops = { |
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.s_std_output = adv7175_s_std_output, |
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.s_routing = adv7175_s_routing, |
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}; |
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static const struct v4l2_subdev_pad_ops adv7175_pad_ops = { |
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.enum_mbus_code = adv7175_enum_mbus_code, |
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.get_fmt = adv7175_get_fmt, |
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.set_fmt = adv7175_set_fmt, |
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}; |
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static const struct v4l2_subdev_ops adv7175_ops = { |
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.core = &adv7175_core_ops, |
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.video = &adv7175_video_ops, |
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.pad = &adv7175_pad_ops, |
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}; |
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/* ----------------------------------------------------------------------- */ |
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static int adv7175_probe(struct i2c_client *client, |
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const struct i2c_device_id *id) |
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{ |
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int i; |
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struct adv7175 *encoder; |
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struct v4l2_subdev *sd; |
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/* Check if the adapter supports the needed features */ |
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
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return -ENODEV; |
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v4l_info(client, "chip found @ 0x%x (%s)\n", |
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client->addr << 1, client->adapter->name); |
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encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL); |
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if (encoder == NULL) |
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return -ENOMEM; |
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sd = &encoder->sd; |
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v4l2_i2c_subdev_init(sd, client, &adv7175_ops); |
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encoder->norm = V4L2_STD_NTSC; |
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encoder->input = 0; |
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i = adv7175_write_block(sd, init_common, sizeof(init_common)); |
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if (i >= 0) { |
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i = adv7175_write(sd, 0x07, TR0MODE | TR0RST); |
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i = adv7175_write(sd, 0x07, TR0MODE); |
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i = adv7175_read(sd, 0x12); |
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v4l2_dbg(1, debug, sd, "revision %d\n", i & 1); |
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} |
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if (i < 0) |
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v4l2_dbg(1, debug, sd, "init error 0x%x\n", i); |
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return 0; |
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} |
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static int adv7175_remove(struct i2c_client *client) |
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{ |
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struct v4l2_subdev *sd = i2c_get_clientdata(client); |
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v4l2_device_unregister_subdev(sd); |
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return 0; |
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} |
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/* ----------------------------------------------------------------------- */ |
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static const struct i2c_device_id adv7175_id[] = { |
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{ "adv7175", 0 }, |
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{ "adv7176", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, adv7175_id); |
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static struct i2c_driver adv7175_driver = { |
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.driver = { |
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.name = "adv7175", |
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}, |
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.probe = adv7175_probe, |
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.remove = adv7175_remove, |
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.id_table = adv7175_id, |
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}; |
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module_i2c_driver(adv7175_driver);
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